Jack Denur

6 Questions 116 Answers 0 Followers

Questions related from Jack Denur

Is totally dark matter possible or impossible? Is the corresponding aspect of the Multiverse possible or impossible?

Dark matter interacts with ordinary matter (and ordinary energy) via gravity (G), but not via electromagnetism (E), the strong nuclear force (S), or the weak nuclear force (W). But is totally dark...

13 June 2022 1,768 13 View

Theories that require (not merely allow) magnetic monopoles versus magnets with no poles?

Some theories of physics require (not merely allow) magnetic monopoles. [See, for example, David J. Griffiths, Introduction to Electrodynamics, Fourth (Kindle) Edition (Cambridge University Press,...

17 November 2021 5,471 6 View

No classical limit for a particle with energy E traversing a barrier of height V ( E > V)?

In accordance with the classical limit, the probability per attempt of tunneling decreases towards zero as the mass m of a particle, the deficit V − E between its energy E and the barrier height V...

14 July 2021 3,324 3 View

Is there still support for Scientific WorkPlace?

I have Scientific WorkPlace 5.5 from MacKichan Software. But after 40 years of providing excellent products and service, MacKichan Software is no longer in business. Are there any other companies...

14 July 2021 357 20 View

Are. or are not, superinsulators with respect to electricity also superinsulators with respect to heat?

Superconductors with respect to electricity manifest zero resistance to electric current. But they are NOT also superconductors with respect to heat. The flip side of electrical superconductivity...

15 August 2020 2,374 7 View

A spherical-shell clock paradox in General Relativity?

How can a clock inside a spherical shell "know" that it should tick slowly? Unlike Newton's action-at-a-distance theory of gravity (though even Newton himself had reservations about this),...

30 December 2019 182 22 View